#define _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
int main() 
{
	int a = 0;
		scanf("%d",&a);
		/*while (a)
		{
			printf("%d",a%10);
			a = a/10;

		}*/
		for (a = 0; a != 0; a / 10)
		{
			printf("%d", a % 10);
		}
	return 0;
}